Check The Installation - nVent RAYCHEM EM4-CW Manuel D'installation

CHECK THE INSTALLATION

Check heating cable
• Visually check the heating cable for damage.
• Verify that the heating cable has been correctly
fastened to the spacers.
• Verify that the desired spacing has been
maintained and that the heating mat has been
kept away from expansion joints, sharp edges,
etc.
• Verify that the heating mat has been installed
at the correct depth.
• Visually check the connection leads for correct
installation.
Make a layout sketch
Record the layout of each circuit, with particular
reference to the position of the connection
heating cable - cold cable and the heating
cable end. (a photograph is also an acceptable
reference of the layout.)
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Perform the resistance tests
Carry out the resistance tests on each circuit
to detect any damage that may have occurred
during or after installation. The insulation
resistance reading must be greater than 100 MΩ.
If the insulation resistance is less than this, the
cable may have been damaged. Where possible,
locate the fault and rectify.
Record the values for each circuit on the
Installation Test Record.
If concrete is to be poured straight away, go to
section "Concrete Pouring" (overleaf).
Protect the installation
Prevent pedestrian and vehicular traffic in the
area where the heating cable has been installed.
Avoid disturbing the reinforcing steel or mesh.